/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.boodqian.airreport;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ImageView;
import android.widget.SeekBar;

/**
 * @hide
 */
public class SeekBarDialogPreference extends DialogPreference {
    private static final String TAG = "SeekBarDialogPreference";

    private Drawable mMyIcon;
    private static final int DEFAULT_VALUE = 0;
    private int mCurrentValue;
    private SeekBar mSeekBar;

    public SeekBarDialogPreference(Context context, AttributeSet attrs) {
        super(context, attrs);

        setDialogLayoutResource(R.layout.seekbar_dialog);
        createActionButtons();

        // Steal the XML dialogIcon attribute's value
        mMyIcon = getDialogIcon();
        setDialogIcon(null);
    }

    // Allow subclasses to override the action buttons
    public void createActionButtons() {
        setPositiveButtonText(android.R.string.ok);
        setNegativeButtonText(android.R.string.cancel);
    }

    @Override
    protected void onBindDialogView(View view) {
        super.onBindDialogView(view);
        
        mSeekBar = getSeekBar(view);
        mSeekBar.setProgress(mCurrentValue);

        final ImageView iconView = (ImageView) view.findViewById(R.id.icon);
        if (mMyIcon != null) {
            iconView.setImageDrawable(mMyIcon);
        } else {
            iconView.setVisibility(View.GONE);
        }
    }

    protected static SeekBar getSeekBar(View view) {
        return (SeekBar) view.findViewById(R.id.seekbar);
    }

    @Override
    protected void onDialogClosed(boolean positiveResult) {
        // When the user selects "OK", persist the new value
        if (positiveResult) {
            mCurrentValue = mSeekBar.getProgress();
            persistInt( mCurrentValue );
            setSummary(prepareSummary());
        }
    }

    @Override
    protected Object onGetDefaultValue(TypedArray a, int index) {
        return a.getInteger(index, DEFAULT_VALUE);
    }

    @Override
    protected void onSetInitialValue(boolean restorePersistedValue,
            Object defaultValue) {
        if (restorePersistedValue) {
            // Restore existing state
            mCurrentValue = this.getPersistedInt(DEFAULT_VALUE);
        } else {
            // Set default state from the XML attribute
            mCurrentValue = (Integer) defaultValue;
            persistInt(mCurrentValue);
        }
        setSummary(prepareSummary());
    }
    
    private CharSequence prepareSummary() {
        return Integer.toString(mCurrentValue) + "%";
    }
}
